Library

Portal to drilling documents and publications of interest to the ice drilling community. There are currently 501 documents in the Library.

Document Details

Studies of melting ice using CO2 laser for ice drilling
Authors: Sakurai T, Chosrowjan H, Somekawa T, Fujita M, Motoyama H, Watanabe O, Izawa Y
Year: 2016
Periodical/Journal: Cold Regions Science and Technology
Volume: 121
Page Range: 11-15
Abstract:

A CO2 laser can be used to melt ice. Here we use a CO2 laser at 10.6 µm, a wavelength at which ice strongly absorbs, to drill (via melting) through ice. The resulting drilling speed is measured at several irradiation intensities, ice-snow densities, and beam angles relative to the horizontal axis. The speed increases nearly in proportion to the laser intensity. For an intensity of about 50 W/cm2, for instance, the melting speed is 4 mm/s for snow of density 153 kg/m3 and 0.8 mm/s for solid ice. Results also show that for downward beam angles, melt-water accumulates in the hole, reducing the drilling speed. Nevertheless, we also consider other laser mediums and argue that an optical-fiber-coupled laser drilling system could be used for drilling on glaciers and ice sheets.

DOI: 10.1016/j.coldregions.2015.09.014
URL: View document